The 2016 presidential campaign has in many ways become a question of character. Even though Hillary Clinton and Donald Trump both have incredibly loyal supporters, the two candidates also inspire some intensely negative feelings among voters. Clinton and Trump are the two most unpopular candidates since modern polling began.

The definition of postpartum depression is broad. The symptoms can range anywhere from feeling exhausted and disconnected from your baby to paranoia that someone else might hurt your child or, even worse, that you yourself might do your baby harm.

We could start this story as we usually do with reminding of you of all the recent school shootings — including one just Thursday night at Tennessee State University — reporting how many people were killed, what inspired the shooter. We could hear local leaders condemning the acts of violence.

But this narrative is so much a part of our culture and our politics right now that we don't need to remind you how we got here.

Instead, let's meet a couple of people who have dedicated much of their professional lives to preventing this kind of violence.

It used to be a given: When your kids reached school age, they'd strap on their backpacks and head for the neighborhood elementary school. Or, you'd pay a hefty tuition to send them to private school.

In the last two decades, a third option has emerged. Today, there are more than 6,000 charter schools in the country. And lately, they've been the subject of passionate and often acrimonious debate about the right way to fix public education in America.

Thousands of migrants fleeing war in their home countries have have made it into Germany and to Berlin.

Once they arrive here, they begin the waiting game.

Germany is expecting at least 800,000 migrants this year alone, and Germans are struggling with the changes they bring.

At Berlin's main processing center for migrants, at a social service ministry, people are handed a number on a slip of paper. They crowd around a digital screen in the ministry courtyard to watch for their number to flash, indicating they can go inside to begin the asylum process.

Last week was supposed to be the first week of school for students in Seattle, Washington. Instead it was the beginning of a teachers' strike. Negotiators are at a standoff over wages and performance evaluations.

In 2012, Chicago's public school teachers went on strike, leaving the city's 350,000 kids out of school for eight days.

The National Football League held its annual hall of fame induction ceremony Saturday night, in Canton, Ohio. Eight players were given football's highest honor, including a posthumous induction for Junior Seau, the former linebacker for the San Diego Chargers who killed himself in 2012.

After his death, Seau's brain showed signs of chronic damage — the same kind of damage that has been found in dozens of other former NFL players.

Ten years ago this month, the monster storm Hurricane Katrina thundered through New Orleans and coastal Mississippi and Alabama. Many who survived the storm and its aftermath are still feeling its terrible impact.

This week on For the Record: Hurricane Katrina's mark on one family, 10 years later.

In a speech last week, President Obama made a case for overhauling the criminal justice system.

"Mass incarceration makes our country worse off, and we need to do something about it," he said.

Then he took his message to the people his proposals could affect most. On Thursday, he met with six inmates at the Federal Correctional Institution in El Reno, Okla. — all convicted of nonviolent drug offenses — and became the first sitting president to ever visit a federal prison.

In cities with high crime rates, like Newark, N.J., figuring out the right balance of police engagement is especially hard.

In 2013, Newark had 40 homicides per 100,000 residents, the third-highest homicide rate in the country.

Last fall, the new mayor, Ras Baraka, announced a plan to tackle the crime and neglect that have plagued the city's worst neighborhoods. He started by focusing on two of the toughest: Clinton Hill and the Lower West Ward. I asked him in January how he'll know the program is working.

Most of the troops who died during the wars in Iraq and Afghanistan were flown to Dover Air Force base in Delaware. And for most of the wars, those dignified transfers were off limits to the press. That changed in 2009, when President Obama lifted the media ban and paid a visit to Dover himself.

It is part of the American dream, the notion that if you have a good idea and a fire in your belly, you can turn an idea into a successful business. It's that entrepreneurial spirit that drives the global economy.

That message is everywhere in our culture. President Obama echoed it last week, at a summit on entrepreneurship at the White House.

"We have a lot of brainpower here," he said. "We've got innovators and investors, business leaders, entrepreneurs. We've even got a few Sharks."

Bruce Jenner's national TV interview with Diane Sawyer in April ended months of speculation. The former Olympian turned reality TV star revealed that he now identifies as a transgender woman — though he still prefers to be called "he" for the time being.

Jenner was hailed as a hero for his openness on an issue that has caused real heartache for many. National surveys show an unusually high rate of attempted suicide among people who are transgender.

Forty years ago this month, North Vietnamese troops captured Saigon. The long war in Vietnam was coming to an end.

In the midst of the political fallout, the U.S. government announced an unusual plan to get thousands of displaced Vietnamese children out of the country. President Ford directed that money from a special foreign aid children's fund be made available to fly 2,000 South Vietnamese orphans to the United States.

Public perceptions of marijuana have come a long way. Once a symbol of the counterculture, pot has become part of the culture.

In Colorado, it's part of everyday culture.

Colorado has allowed medical marijuana since 2001, but voters amended the state constitution in 2012 to allow private marijuana consumption for adults aged 21 or older. The first-ever stores to sell state-regulated recreational pot opened their doors on Jan. 1, 2014.

The law has raised serious concerns for parents and those working with kids to keep young people away from drugs.